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(Np Model.) 2 Sheets-Sheet 2. 'J. S. BENNETT. MOTION CONVERTER FOR WINDMILLS'.

Irwe ntor' Wt-tree; s e s Jbse vk JBennetZ.

UNITED STATES PATENT OFFICE.

JOSEPH S. BENNETT, OF ST. PAUL, MINNESOTA, ASSIGNOR OF ONE-HALF TO ANDREW RANKIN, OF SAME PLACE.

MOTION-CONVERTER FOR WINDMILLS.

SPECIFICATION forming part of Letters Patent No. 593,290, dated November 9, 1897. Application filed August 10,1896. Serial No. 602,317. (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH S. BENNETT, of St. Paul, Ramsey county, Minnesota, have invented certain Improvements in Motion- Converters for \Vindmills, of which the following is a specification.

My invention relates to improvements in windmills, its object being to provide improved means for converting the reciprocating motion generated by the crank-shaft of the mill into continuous rotary motion for driving belts and the like.

To this end my invention consists in providing a counter-shaft carrying the belt-driving pulleys, and fitted also with two internal ratchets, and in arranging axially with these other counter-shafts carrying three or more gravity-pawls arranged to engage with said ratchets. Adjacent these counter-shafts and parallel therewith I arrange a rockshaft which is operatively connected with the crank-shaft of the mill. The rock-shaft is provided with a pair of arms extending one above and the other below the counter-shafts, each having a rope or cable connected to and wound about the pawlcarrying countershafts or a drum upon the same. Also connected with the pawl-carrying counter-shafts by means of a rope or cable wound oppositely thereon are counterbalancing weight arms or levers, which serve to reverse the motion of said shafts.

My invention further consists in the construction and combination hereinafter particularly described and claimed.

In the accompanying drawings, forming part of this specification, Figure 1 is a conventional side elevation of my improved attachment, showing one of the ratchets and connected pawls, the operating and counterbalancing levers, and the rock-shaft and its connection with the pump-rod. Fig. 2 is a plan view of my improved attachment, showing the counter-shafts and rock-shaft and the frame in which they are journaled. Fig. 3 is a central longitudinal section through the counter-shafts. Fig. at is a detail end view of one of the ratchets and its pawls, and Fig. 5 is a detail central longitudinal section of the same.

In the drawings let A represent the mill;

' of the rod4 to vary the stroke.

B, its supporting-frame; 2, its crank-shaft; 3, the crank mounted thereon, and 4 the connected reciprocating rod, adapted to serve as a pump-rod or for any other similar purpose and working in the guides 5 upon the side of the frame.

Conveniently adjacent the windmill frame or tower is the frame 0, upon which is journaled the rock-shaft 6, which is operated by means of the arm 7, fixed upon the same and having pivotal connection 8 with the end of the rod 4. The arm 7 is preferably provided with a slot 9, so as to permit of adjustment Also journaled upon the frame 0, parallel with the rock-shaft, are the counter-shafts 9, 10, and ll, arranged axially, as shown. The shaft 9 carries at each end an internal ratchet 12 and is provided with the intermediate balancewheel 13, with suitable belt-pulleys 14. Each of the shafts 10 and 11 carries'a plurality of gravity-pawls 15, arranged in the same plane with the adjacent ratchet and adapted to engage the same.

The shafts 10 and 11 are alternately positively driven from the rock-shaft by means of the arms 16 and 17, extending, preferably, one below and the other above the adjacent counter-shafts, and each having a rope or cable 18, with its other end connected to and wound about the double drum 19 upon the shaft. Upon the other part of each drum is oppositely wound a cable 20, connected to a counterbalancing-arm 21, having hinge connection 22 with the frame and having a suitable weight 23, so as to reverse the motion of the counter-shaft when released by the opposite movement of the arm 16 or 17. It will thus be seen that with the rocking of the shaft 6, as driven by the mill, first one pawlshaft and then the other is positively driven, at least one of the pawls being always in position by reason of its gravity to engage with the ratchet.

My invention is adapted to be used with the ordinary forms of windmill and without altering the construction of the same, and when not in use may be disconnected from the pump-rod and said rod used for the purpose of pumping water, &c.

I claim- The combination with the windmill, of an independent, portable-frame adapted to be positioned adjacent thereto, a driving rockshaft journaled in said frame, and having means for detachably, operatively connecting it to the crank-shaft, or pump-rod of the windmill, the power-transmitting, parallel driven shaft journaled in said frame, the internal ratchets upon the ends of said driven shaft, the driven rock-shaft arranged axially with the driven shaft at each end thereof, and journaled in said frame and projecting within the adjacent ratchet, the plurality of gravitypawls carried by each of said rock-shafts and adapted to drop into engagement with said ratchet with the rocking of their shaft, the pair of radial arms carried by said main rockshaft, and projecting one above one of said driven rock-shafts, and the other below the other rock-shaft, the cables oppositely wound upon each of said driven rock-shafts, one being connected to the adjacent radial arm, and the other carrying a counterweight, whereby with the rocking of the main rock-shaft power is transmitted through said radial arms, and connected cables to said driven rock-shafts, so as to alternately and oppositely rock the same, and by means of the pawl-and-ratchet connection continuously operate said drive shaft.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH S. BENNETT. Witnesses:

T. D. MERWIN, H. S. JoHNsoN. 

